Since Yosemite, the green button in the upper left corner on each window activates the fullscreen mode. By holding the alt/⌥ Option key, it works as before (Mavericks). Is there any possibility (Terminal?) to change this behaviour back to “normal”? For example: holding alt for fullscreen mode?


You can change the behaviour back to “normal” with BetterTouchTool.


According to what I could find, you cannot change the default behaviour (much like most things in OSX) … however what I ended up doing is using a keyboard shortcut to use zoom. The following answer helped me do that:


  • System Preferences -> Keyboard -> Shortcuts
  • Add a custom “App Shortcut”
  • name “Zoom”
  • whatever key combo you want e.g. Opt+Cmd+=

Double-clicking the empty area in the window frame (title bar) seems like the best answer. In fact a great one, since this is a larger area than the green button..

Worth noting that Firefox wants to hide the title bar – this threw me for a while. Go to ‘toolbars>customize’ and click on ‘title bar’ to get it back.


According to this page you can achieve this using BetterTouchTool

  1. Download BetterTouchTool here
  2. Open BetterTouchTool and grant access to “Accessibility” when requested (this will open System Preferences > Security > Privacy > Accessibility)
  3. Allow BetterTouchTool access in OS X Preferences
  4. Back in BetterTouchTool, click on the “Other” tab in the upper right of the app
  5. Select “Global” from the left side options
  6. Near the bottom, click on “Configure New Trigger”
  7. In the “Trigger” pulldown menu, choose “Leftclick Green Window Button”
  8. In the “Predefined Action” menu, choose “Zoom Window Below Cursor”
  9. Flip back to the OS X Finder (or another open app) and click the green button, it should now simply maximize the window rather than send it into Full Screen Mode (even if the icon changes to fullscreen when the mouse hovers).
  10. Close BetterTouchTool preferences pane (Red Window Button)

The changes will stay in effect as long as you have BetterTouchTool runs in background (its icon should appear in the menu bar, and that it is configured this way.

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